Used in oligonucleotide synthesis, particularly in the preparation of biotin-labeled DNA or RNA probes. The dimethoxytrityl (DMT) group acts as a protecting group, allowing for controlled coupling during solid-phase synthesis. After synthesis, the DMT group can be selectively removed under mild acidic conditions, enabling further modifications or purification steps. The biotin moiety provides a high-affinity binding site for streptavidin or avidin, making the compound valuable in applications such as affinity purification, detection assays, and immobilization of nucleic acids on streptavidin-coated surfaces like biosensors or microarrays. Commonly used in molecular biology, diagnostics, and genomics research where sensitive and specific detection is required.